Bench-plane



(NoModel.) l

J. A. TRAU'I'.4

BENCH PLANE. No. 306,877. Patented 00m. 211884.

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UNITED STATES ATENT OFFICE.

JUSTUS A. TRAUT, OF N EW BRITAIN, CONNECTICUT.

BENCH- PLANE.

v-3Pl?.CIFICATION forming part of Letters Patent No. 306,877, datedOctober 21, 1884.

(No model.)

.To @ZZ whom it may concern.:

Be it known that I, JUsTUs A. TRAUT. a citizen of the United States,residing at New Britain, in the county of Hartford and State ofConnecticut, have invented a new and useful Improvement in Bench-Planes,of which the following is a specification.

My invention relates toimprovements in bench-planes, and the object ot'my invention is to produce a better mechanism for adjusting thecutting-edge of the bit to square it with the stock. I attain thisobject by the lsimple construction illustrated in the accompanyingdrawings. in which-f Figure 1 is a side elevation of my improvedbench-plane. Fig. 2 is a sectional viewthereof, partly in elevation, online x x of Fig. l. Fig. 3 is a like view with cutter attached, and Fig.4 is a sectional view thereof on'line i/ y ot' Fig. 2. y

It is oftentimes difficult to grind the cut.-

ting-edge of a plane-bit exactly square, audtherefore when set in placeit does not stand square with the stock. j Several prior patentssiowplanes having mechanism for effecting this lateral adjustment of thecutting-bit edgewise. one of which mechanisms is a lever arranged underthe bit al the upper end of the Another consists of two screws the headsof which act upon thecdges of the bitat the upper end of the frog.Another patentshows side screws near the middle ot the stock. which. inconnection with swinging dogs and a sliding piece, hold the bit in itsadjusted position. All of said pricrart is hereby disclaimed. The majorportion of my plane is the same as ordinary bench-planes. The particularplane illust rated is the one known as Baileys patent plane.

I secure the edgewise-adjusting. lever a to the plane seat or frog bymeans of the rivet b and washer d, said washer producing sufficientfriction to keep the lever c in place when the cap is removed. Thislever is also let into the frog or bit seat A, so as to bring its upperside just below the under side of the hit B, as shown in Figs. l and 4,and said frog or seat is also cut away, as at e, Fig. 2, in order topermit a lateral movement ofthe lever a. The lower end of said lever ispro vided with a projection, f, which rises above the surface of thefrog or seat A a distance abontvequal to the thickness of the bit B, butnot far enough to bind against the under surface ot' the cap-iron C.This projection f is of a width which will about till the ordinary slotfor vthe cap-screw at the upper end ot' the bit. I prefer to provide theunder side of the lever a with a small boss or trunnion concentric withthe rivet b, on which it is fulerumed, and sink said trunnion into acircular recess. as. shown in Fig. 4; but this construction is n otessential. I also provide the stock with stationary pins h h nearthelower end of the bit B. upon which said bit can swingorfulcrutu whenmoved edgewise. These pins are threaded merely for convenience ofinsert-ion; but when once inserted plain pins will answer the samepurpose.

Vhen the parts are 1n place ready for use, in order to adjust the bitedgewise to bring its edge square with the stock, it is only necessaryto move the lever ct to one side, as shown in Fig. 3, which illustratesa bit whose end is ground ont of square to an unusual degree. It shouldbe observed that the lever a is close up under the bit, and does not soproject as to ever render any inconvenience whatever in the ordinaryuses of the plane. I havel shownk this lever as thc best-known mechanismfor an edgewise adjustment of the bit; but other-mechanism for thisadjustment located at the upper end instead of the-lower end of thestock will secure the advantages of my invention.

'Ihevstatiouary pins arelocated in the stock, so as to bear directlyupon the edges ofthe bit near its cutting end, and. as thelaterallyadjusting mechanism is operated to move the upper end of thebit edgewise, it will rock or fulcrum upon the stationary pins at thelower end.

My mechanism 'for this edgewise adjustment does not in the leastinterfere with. the ordinary eudwise adjustment of the bit, and requiresno change whatever in the ordinary parts ofthe plane, except to recessand drill the frog or bit and the stock for the reception and attachmentofthe lever a and pins lt It.

I claim as my invention- The combination of a plane stock and bit, ancdgewise-adjusting mechanism for acting upon the bit at its upper end,and the sta tionary fulcrum-pins h h in the stock near the cuttingend ofthe bit, substantially as described, and for the purpose specified.

JUBTUS A. TRAUT.

Vitnesses:

Janus SHEPARD, EDDY N. SMITH.

IOO

